C++ Vector rend() function

by Online Tutorials Library July 22, 2022

C++ Vector rend()

The rend() function stands for ‘reverse end’ and is used to point the element preceding the first element of the vector.

Syntax

Consider a vector ‘v’. Syntax would be:

Parameter

It does not contain any parameter.

Return value

It returns a reverse iterator pointing to the reverse end of the vector container.

Example 1

Let’s see a simple example.

  #include   #include  using namespace std;  int main()  {  vector v{1,2,3,4,5};  vector::reverse_iterator ritr;  for(ritr=v.rbegin();ritr!=v.rend();ritr++)  std::cout<< *ritr<<” “;  return 0;  }  

Output:

5 4 3 2 1

In this example, rend() function is used to get reverse integer values contained in the vector.

Example 2

Let’s see a simple example.

  #include <iostream>  #include<vector>  using namespace std;  int main()  {  vector<string> v{“Computer science”,”electronics”,”electrical”,”mechanical”};  vector<string>::reverse_iterator ritr;  vector<string>::iterator itr;  std::cout<<“Strings are :”;  for(itr=v.begin();itr!=v.end();itr++)  cout<<*itr<<“, “;  cout<<‘n’;  cout<<“Reverse strings are :”;  for(ritr=v.rbegin();ritr!=v.rend();ritr++)  cout<<*ritr<<“, “;  return 0;  }  

Output:

Strings are :Computer science, electronics, mechanical  Reverse strings are :mechanical, electrical, electronics, Computer science

In this example, rend() function is used to get reverse string values contained in the vector.

Next TopicC++ Vector

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